Home / 23.05-34.53-12.90

Finding the Fourth Proportional to 23.05, 34.53 and 12.90

Calculator

Solution

The fourth proportional to 23.05, 34.53 and 12.90 is: 19.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    23.05 : 34.53 = 12.90 : x
  2. Step 2: Convert to fraction form
    23.05/34.53 = 12.90/x
  3. Step 3: Cross multiply
    23.05x = 34.53 × 12.90
  4. Step 4: Simplify right side
    23.05x = 445.44
  5. Step 5: Solve for x
    x = 445.44/23.05
  6. Step 6: Final answer
    x = 19.32

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.